815581-19-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 815581-19-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,5,5,8 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 815581-19:
(8*8)+(7*1)+(6*5)+(5*5)+(4*8)+(3*1)+(2*1)+(1*9)=172
172 % 10 = 2
So 815581-19-2 is a valid CAS Registry Number.